Been through all these scenarios. They were enough of a pain that I dropped a lock.

Wipe at a boss in a instances, then have 1 guy get killed on a trash pull. (It was very common for me to lose 1-3 guys on boss fights since I had no healer)

Have the same guy get killed 2x within 1/2 an hour in an instance

Getting ganked, then getting a guy killed on a quest.

Die on a quest, then having that guy get killed again when someone tries to gank.

Forget to put soul stone up the second it's ready, then die.

All equal run backs.